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The Microsoft Network Monitor tool has been around since the days of NT 4.0, and although it wasn’t the best sniffer around, it was a good tool to have in your toolbox if nothing else worked. Network Monitor (or NM for short) has been released in 2 major versions, and has had 2 types of installations – one, as a freeware add-on to the Windows Server operating systems (and it is still available for use on Windows Server 2003), and the second as a full sniffer program capable of using promiscuous mode, available only for SMS users.
All this has changed with the release of NM3.0 last year. NM3.0 looks much more mature than the program it has evolved from, and it already has some of the cool features only found in 3rd-party sniffers such as WireShark (previously known as “Ethereal”). You can take a look at some of the most used freeware Windows-based sniffers below.
Microsoft Network Monitor v3.1 is now available on http://connect.microsoft.com, featuring wireless sniffing and an easier way to create filters using “Right Click Add To Filter”.
Here is a list of features that are new to NM3.1:
NM3.1 is currently available on the Connect site. In order to get it you will need to do the following:
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NM3.1 will be also released on the main Microsoft site in a few weeks.
Other Windows-based freeware sniffers links
Wireshark
WinPcap, The Packet Capture and Network Monitoring Library for Windows http://www.winpcap.org/
AirSnort Homepage http://airsnort.shmoo.com/
Downloads NetStumbler http://www.netstumbler.com/downloads
Got more recommendations for freeware Windows-based sniffers? Add your comments below!
Got a question? Post it on our Security Forums!
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